fix(admin-e2e): register missing DI services so ClusterDetail interactive circuit boots

UnsTabDragDropE2ETests were timing out at the 'UNS Structure' nav-link
locator because AdminWebAppFactory never registered AdminHubConnectionFactory
/ HubTokenService / DataProtection — ClusterDetail.razor's @inject threw at
circuit boot, so the page never advanced past the Loading placeholder. 2 → 3
pass after the registrations land. Also documents the Modbus standard-vs-
exception_injection coverage matrix in the fixture README + cross-references
docs/drivers/AbServer-Test-Fixture.md from each Emulate test so a developer
landing on a skipped test has a direct doc pointer.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.AbCip.IntegrationTests/Emulate/AbCipEmulateAlmdTests.cs

@@ -29,6 +29,10 @@ namespace ZB.MOM.WW.OtOpcUa.Driver.AbCip.IntegrationTests.Emulate;
 ///     <para>Runs only when <c>AB_SERVER_PROFILE=emulate</c>. ab_server has no ALMD
 ///     instruction + no alarm subsystem, so this tier-gated class couldn't produce a
 ///     meaningful result against the default simulator.</para>
+///     <para>The Emulate tier is hardware-gated (Rockwell per-seat license, Windows-only,
+///     conflicts with Docker Desktop's WSL 2 backend) so a permanent skip in CI is expected
+///     — see <c>docs/drivers/AbServer-Test-Fixture.md</c> §"Logix Emulate golden-box tier"
+///     for the full rationale + the gap matrix this test closes.</para>
 /// </remarks>
 [Collection("AbServerEmulate")]
 [Trait("Category", "Integration")]